Tablet computer battery



FIG. 1 is a front perspective view of an ornamental design for a tablet computer battery;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a first side view thereof; and,

FIG. 8 is a second side view thereof.

The broken lines in FIGS. 1-8 showing environmental structures are for illustrative purposes and form no part of the claim design. 

CLAIM The ornamental design for a tablet computer battery, as shown and described. 